NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Partisan Impacts on the Economy: Evidence from Prediction Markets and Close Elections

Erik Snowberg, Justin Wolfers, Eric Zitzewitz

NBER Working Paper No. 12073
Issued in March 2006
NBER Program(s):   AP   EFG   POL

Analyses of the effects of election outcomes on the economy have been hampered by the problem that economic outcomes also influence elections. We sidestep these problems by analyzing movements in economic indicators caused by clearly exogenous changes in expectations about the likely winner during Election Day. Analyzing high frequency financial fluctuations following the release of flawed exit poll data on Election Day 2004, and then during the vote count, we find that markets anticipated higher equity prices, interest rates and oil prices and a stronger dollar under a Bush presidency than under Kerry. A similar Republican-Democrat differential was also observed for the 2000 Bush-Gore contest. Prediction market based analyses of all Presidential elections since 1880 also reveal a similar pattern of partisan impacts, suggesting that electing a Republican President raises equity valuations by 2 3 percent, and that since Reagan, Republican Presidents have tended to raise bond yields.

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This paper was revised on January 29, 2007

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Document Object Identifier (DOI): 10.3386/w12073

Published: Snowberg, Erik, Justin Wolfers and Erik Zitzewitz. “Partisan Impacts on the Economy: Evidence from Prediction Markets and Close Elections.” Quarterly Journal of Economics 122, 2 (May 2007): 807-829. citation courtesy of

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